Classic Industries offers a wide selection of Literature for your 1986 Pontiac Firebird. Classic Industries offers Wiring Diagrams.. Our comprehensive 1986 Pontiac Firebird radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 1986 Pontiac Firebird.
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Open the exact vehicle hub for this wiring page to move into repair, manual, and code clusters without leaving the 1986 Pontiac Firebird context.. The wiring diagram requires a little interpretation. Here goes: The a/c harness is a separate harness that was not used on heater cars. The standard wiring harness on the car has a heater power wire coming from the heater fuse through a dedicated set of contacts in the ignition switch.